As a boarding kennel owner and a vet, I am often asked about this illness. From my point of view it has an unfortunate name, which implies that it only occurs in kennels. In fact an outbreak can occur in any area, and because it spreads rapidly, sooner or later an infected dog is bound to enter the kennels. Outbreaks are more common in the summer months, but there have been several cases in my area recently. Perhaps the mild autumn we have had has provided the right conditions for spread.
Kennel Cough is a contagious illness of dogs, the main symptom of which is coughing. It should correctly be called Infectious Canine Bronchitis, or Infectious Canine Tracheobronchitis, but it is often known as Kennel Cough because of the fact that it spreads most readily when dogs are in close contact with each other. As well as in kennels, this would also occur at dog shows, training classes, veterinary surgeries, grooming parlours and many popular exercise places eg parks, beaches etc.
The infection is spread by air-borne droplets, like colds and flu in humans. Another similarity with flu in humans is that there are many different strains of infection, making it difficult to prevent entirely by vaccination.